• Medientyp: E-Artikel
  • Titel: Caesium and iodine release from spent mixed oxide fuels under repository relevant conditions: Initial leaching results
  • Beteiligte: Schreinemachers, Christian [VerfasserIn]; Leinders, Gregory [VerfasserIn]; Mennecart, Thierry [VerfasserIn]; Cachoir, Christelle [VerfasserIn]; Lemmens, Karel [VerfasserIn]; Verwerft, Marc [VerfasserIn]; Brandt, Felix [VerfasserIn]; Deissmann, Guido [VerfasserIn]; Modolo, Giuseppe [VerfasserIn]; Bosbach, Dirk [VerfasserIn]
  • Erschienen: Cambridge University Press, 2022
  • Erschienen in: MRS advances 7, 100-104 (2022). doi:10.1557/s43580-022-00220-7
  • Sprache: Englisch
  • DOI: https://doi.org/10.1557/s43580-022-00220-7
  • ISSN: 2059-8521
  • Entstehung:
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  • Beschreibung: Autoclave leaching experiments are conducted on three well-characterised, irradiated, and cladded mixed oxide fuel-rod segments with burnups ranging from 29 GWd/t HM to 52 GWd/t HM to investigate the instant release fraction of fssion gases and long-lived fssion products and to assess the long-term fuel matrix corrosion. The segments are exposed to bicarbonate solutions as reference groundwater at neutral pH and a synthetic young cementitious water at pH 13.5 under reducing atmosphere (4 vol% H 2 in Ar at 40 bar pressure), since 2018. The initial leaching results for the fssion products caesium and iodine as representative elements of the instant release fraction were found to depend on the leachate composition as well as on the fuel burnup.
  • Zugangsstatus: Freier Zugang